Ingot and ingot-mold.



E. GATHMANN.

INGoT AND INGoT MOLD. APITLICATION FILED NOV. 23. |912.

Patend 0013. 2,1917.

2 SHEETS-SHEET l.

gnou/doc zalf] afmanw f EGATHMANNI INGOT. AND INGOT MOLD. I APILHIAI'ION` FILED NOV. 23. 1912.

Patented out, 32, 1917.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEIoE.,

EMIL GATHMANN', 0F IBALTIlllllolxlll, MARYLAND.

`'filo all lwhom #may concern:

Be it known that I, EMIL GATHMANN, `a citizen of the United States, residing in Baltimore city, State of Maryland, have invented certain new and useful Improvements 1n Ingots and In ot-Molds, of which the following is a speci cation.

This invention relates to the manufacture yofingots andA particularly to the manufac -larger portion of the mold."l This tapering of the mold cavity should be progressive but uniform, e., there should not be any sudden change in taper as'that would cause the ingot to'hang at some point of the mold.

With the ordinary tapered ingot for crucible steel practice, it has `been found that diiculty has been encountered in-stacking or piling the ingots for storage on account of their var-yin dimensions from end to end,

- and: it has a so been found diicultft'o work such ingots under the steam hammer or hy-l draulic` ress.y Notwithstanding these troubles, suc ingots have been and are now very extensively use`d.

Bymy improvements I produce tapered ingots of such form that they maybe readily andv uniformly stacked and worked un der the hammer or press and which are practically free from pipes or blow holes.

By my invention I obtain uniform cross 'sectlon of the ingot in certain longitudinal planes but a decreased cross sectlon with consequent change of dimensions in another longitudinal cross section. This I do by leaving some of the sides of 'the ingot straight, `fiat and parallel, while others are tapred.

y improvements are illustrated lin the accompanying drawings, in which, f

Figure 1 shows a vertical central section through a .mold 4:for forming an ingot embodying my improvements.

Fig. z rshows a" top-plan view thereof. Fig.. 3 shows a side elevation `of one section of the mold illustrated in Fig. 1;

Fig. It shows a top plan view. of the form of mold lshown in Figs. 1 and 3, both see, 'Y

tions of the mold being illustrated,

Speciilcation of Letters Patent.

INGOT AND INGOT-MOLD.

Patented Oct. 2, 1917.

Application led November 23, 1912. Serial No. 733,062.

Fig. line 5-5 of Fig. 1.

n Fig. shows a bottom plan view of the f mold shown in Fig. 1.

Fig. 7 shows a vertical central section through a non-sectional or solid mold for forming an ingot embodying my improve' ments.

Fig. 8 is a fperspective view with parts broken away o an ingot embodying my invention.

shows a transverse section on the Fig. 9 illustrates how the ingots may be made thickerin the-.lower portion thereof.

and relatively thin at thev upper or neck portion, as by such construction the lower portion of the mold absorbs heat rapidly from the ingot, while 'the thin upper pory tion or neck is less absorbent. In this lway the pi pewhich ordinarily forms in the process of manufacture is forced'to the top where itvdi'sappears or dwells near the upper end of the ingot, leavin a relatively small crop end. Then the mo d is made in sections as shown in Figs. 1 to 6, suitable devices are employed for'securing the sections together as is usual in this art.

The shape of the preferred form of mold cavity can be readily understood by reference to the illustration of .the ingot, A shown in Fig. 8. The cavity, of course, must correspond substantially in shape with the ingot. It will be observed that the ingot has a substantially square or rectangular uppen end a and it has four sides a which are substantially straight, parallel and fiat. Between thesefour sides a there are four other sides a2 which taper from the upper portion of the ingot downwardly, gradu- -ally increasing in width toward the lower with it. In this way also any desired number of ingots may be piled or stacked without danger of toppling overand with great compactness. H

Referrin nowxto the mold cavity be observe that it has some of its walls substantially straight. flat and parallel and others tapered from the top ofJ the mold to- Ward the bottom thereof. The 4st r z a,ighi'., iiat a 'war and parallel sides of the mold cavity are indicated at b and the tapered sides at b. The bottom of the mold cavity is preferably slightly rounded at b3 to produce the rounded end a3 at the bottom of the ingot.

By reference to Fig. 6, for instance, it will be observed that the mold cavity, and consequently the ingot is approximately square at both topv and bottom in cross section, the smaller square being inscribed within the top or larger square. By this construction I obtain the advantages of a big end up or tapered ingot without the disadvantages or troubles usually encountered proximately 1.5 times as large as the cross section of the lower end of the ingot. Four of the side walls are practically parallel from'the larger to the smaller cross section.

I claim as my invention: 1. An ingot having two of its opposite sides approximately straight and equidistant from the vertical central axis of the ingot at its upper and lower portions and two intervening sides inclined and converging from the top toward the ingot bottom.

2. A metallic mold in`-which the mold cavity has some of its sides approximately straight and parallel while others are rela-v tively tapered or inclined from the upper end of the mold downwardly toward the bottom thereof.

3. A metallic mold in which the mold cavity has some of its sides approximately straight and parallel, while others are relatively tapered or inclined fromthe upper end of the mold downwardly toward the bottom thereof, said mold cavity being of greater cross section at top than at bottom and the walls of said mold being made to absorb heat more rapidly at its lower portion than at its upper portion.

4. A metallic mold, in which the mold cavity has some of its sides approximately straight and parallel while others are relatively tapered or inclined from the upper end of the mold ydownwardly toward the bottom thereof, the walls on diametricallyV opposite sides of the mold cavity at the lower portion of the mold being thicker than the remaining or intervening walls.

In' testimonyl whereof, I have hereunto subscribed my name.

EMU', GATI-IMANN. Witnesses:

ALEX. C. Gnoom, JosHUA S. HULL. 

